Password‑protect your PDF files instantly. Add user & owner passwords. 100% client‑side – your files never leave your device.
Click or drag & drop PDF here
Max size: 10MB · Works in your browser
Your PDF never leaves your browser. Encryption happens locally using pdf‑lib.
Add password protection in seconds. No account, no upload, no waiting.
Fully responsive – lock PDFs directly from your phone.
1️⃣ Upload a PDF file (max 10MB).
2️⃣ Enter a password (user password) – required to open the PDF.
3️⃣ Optional: Set an owner password for permission control (printing, copying, etc.).
4️⃣ Click "Encrypt & Lock PDF" – your file is secured instantly.
5️⃣ Download the password‑protected PDF. ✅ Share securely with your chosen password.
Protecting sensitive PDFs with a password is essential for privacy and compliance. Unlike online tools that upload your document to a server, Toolslove's PDF Lock works entirely in your browser. Your file stays on your device – no third‑party servers, no tracking. You can set a user password (required to open) and an owner password (to restrict printing/copying). All encryption is done using the industry‑standard pdf‑lib library.
User password is required to open the PDF. Owner password restricts editing, printing, and copying. If you leave owner password blank, it will be set same as user password.
No. All encryption is done locally in your browser using JavaScript. Your document remains completely private.
We recommend files up to 10MB for smooth performance. Larger files may take longer due to client‑side processing limits.
The Pdf Lock on Toolslove.online is a free web-based application designed to password‑protect your pdf files instantly add user and owner passwords, keep documents secure. 100% client‑side, no upload, private and free. instantly. Built using modern, client-side HTML5 and JavaScript technologies, all operations and inputs are processed locally in your browser. This ensures that your private data is never sent to any server, offering absolute privacy, extreme speed, and full offline accessibility.
Input your text, values, or file into the custom entry fields at the top of this page.
Adjust standard parameters, target outputs, or formats to match your specific requirements.
Click the action button. The local browser compilation processes your output instantaneously.
Download or copy the generated output directly. No email address or subscription required.
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